HP XC System Software Administration Guide Version 3.0
# scontrol update NodeName=n3 State=DRAINING Reason="Maintenance"
b. Invoke the stopsys command to shut down the node gracefully:
# stopsys n3
WARNING!
Verify that the power is disconnected to prevent injury or death.
5. Remove the faulty node from the HP XC system.
Note the ports for the Ethernet and system interconnect cables.
6. Add the replacement node to the HP XC system.
Ensure that you reconnect the Ethernet and system interconnect cables to their respective ports and that
you connect the power cable.
7. Enter the following command to force the discovery of the MAC address of the replacement node's
boot interface:
# /opt/hptc/config/sbin/discover --replacenode=n3
NOTE: The -oldmp option is also required for CP6000 systems because their management processors
(MPs) have statically-set IP addresses and are not configured to use DHCP. Thus, for CP6000 systems,
the command to force discovery of the MAC address of the replacement node's boot interface is:
# /opt/hptc/config/sbin/discover --oldmp --replacenode=n3
8. Turn on the replacement node's power:
# startsys --image_and_boot n3
9. Run the spconfig utility:
# /opt/hptc/sbin/spconfig
10. Return the node to service:
# scontrol update NodeName=n3 State=idle
Replacing a System Interconnect Board in an CP6000 System
Use the following procedure to replace a Myrinet system interconnect board, InfiniBand system interconnect
board, or a Quadrics system interconnect board in an CP6000 system. The example commands in the
procedure use node n3.
Caution
The replacement system interconnect board must be the same as the system interconnect board to be replaced.
1. Log in as superuser on the head node.
2. Ensure that no applications are running on the node with the faulty system interconnect board:
# scontrol update NodeName=n3 State=DRAINING \
Reason="Removing node"
3. Use the stopsys command to shut down the node (on which the card is to be replaced) in an orderly
way:
# stopsys n3
4. If the faulty system interconnect board is on the head node, shut down the node with the shutdown
command:
# shutdown -h now
WARNING!
Verify that the power is disconnected to prevent injury or death.
Replacing a System Interconnect Board in an CP6000 System 169